<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!--<form name="form1">
    <input type="text" name="username" placeholder="请输入用户名">
    <input type="password" name="password" placeholder="请输入密码">
    <button type="button" class="submitBtn">提交</button>
</form>-->

<form id="formElem">
    <input type="text" name="firstName" value="John">
    Picture: <input type="file" name="picture" multiple accept="image/gif,image/png">
    <button type="button" class="submitBtn2">提交</button>
</form>

<script src="./index.js"></script>
</body>
</html>